diff --git a/CDT-areaNwkInfo.xsd b/CDT-areaNwkInfo.xsd
index 5cd5c19a7d20ebb8a05f5583111958e0c1142f65..82b5a9aec308258f02f8729fff64a6e521905f6a 100644
--- a/CDT-areaNwkInfo.xsd
+++ b/CDT-areaNwkInfo.xsd
@@ -36,7 +36,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 				<xs:extension base="m2m:mgmtResource">
 					<!-- Resource Specific Attributes -->
 					<xs:sequence>
-						<xs:element name="areaNwkType" type="xs:string" />
+						<xs:element name="areaNwkType" type="m2m:areaNwkType" />
 						<xs:element name="listOfDevices" type="m2m:listOfURIs" />
 		    
 						<!-- Child Resources -->
@@ -57,7 +57,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 				<xs:extension base="m2m:announcedMgmtResource">
 					<!-- Resource Specific Attributes -->
 					<xs:sequence>
-						<xs:element name="areaNwkType" type="xs:string" minOccurs="0" />
+						<xs:element name="areaNwkType" type="m2m:areaNwkType" minOccurs="0" />
 						<xs:element name="listOfDevices" type="m2m:listOfURIs" minOccurs="0" />
 		    
 						<!-- Child Resources -->
diff --git a/CDT-commonTypes.xsd b/CDT-commonTypes.xsd
index c96c14f11c62c80f4d35405850f02c12fdf39e73..8efd718b9292696d5432cee15eebc3f9ad84f276 100644
--- a/CDT-commonTypes.xsd
+++ b/CDT-commonTypes.xsd
@@ -531,6 +531,12 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 		</xs:restriction> 
 	</xs:simpleType>
 
+	<xs:simpleType name="areaNwkType">
+		<xs:restriction base="xs:string">
+			<xs:pattern value="urn:[a-z0-9][a-z0-9-]{0,31}:[a-z0-9()+,\-.:=@;$_!*'%/?#]+"/>
+		</xs:restriction>
+	</xs:simpleType>
+
 	<xs:simpleType name="resourceList" >
 		<xs:list itemType="xs:anyURI" /> 			
 	</xs:simpleType>